Answer:
Step-by-step explanation:
We can write that f(x)=4-9x is y= 4-9x
To find the inverse:
-switch x for y and y for x
y= 4-9x becomes x= 4-9y
-solve for y
x = 4 -9y , subtract 4 from both sides
x-4 = -9y , divide both sides by -9
(4-x)/9 = y
The inverse equation of f(x) = 4-9x is f^-1 (x) = (4-x)/9
